﻿using System;
using System.Windows.Data;

namespace FlagTunes.View
{
    /// <summary>
    /// Provides a value converter that converts a <see cref="System.TimeSpan"/>
    /// 	<para/>
    /// to a <see cref="System.String"/> object with the format: "Hours:Minutes:Seconds"
    /// </summary>
    [ValueConversion(typeof(TimeSpan), typeof(string))]
    public class TimeSpanConverter : IValueConverter
    {
        /// <summary>
        /// Converts a value.
        /// </summary>
        /// <param name="value">The value produced by the binding source.</param>
        /// <param name="targetType">The type of the binding target property.</param>
        /// <param name="parameter">The converter parameter to use.</param>
        /// <param name="culture">The culture to use in the converter.</param>
        /// <returns>
        /// A converted value. If the method returns null, the valid null value is used.
        /// </returns>
        public object Convert(object value, Type targetType,
           object parameter, System.Globalization.CultureInfo culture)
        {
            var timeSpan = (TimeSpan)value;

            string result = String.Format("{0:D2}:{1:D2}:{2:D2}", timeSpan.Hours, timeSpan.Minutes, timeSpan.Seconds);

            return result;
        }

        /// <summary>
        /// Converts a value.
        /// </summary>
        /// <param name="value">The value that is produced by the binding target.</param>
        /// <param name="targetType">The type to convert to.</param>
        /// <param name="parameter">The converter parameter to use.</param>
        /// <param name="culture">The culture to use in the converter.</param>
        /// <returns>
        /// A converted value. If the method returns null, the valid null value is used.
        /// </returns>
        public object ConvertBack(object value, Type targetType,
            object parameter, System.Globalization.CultureInfo culture)
        {
            return null;
        }
    }
}